Closure frame



CLOSURE FRAME Filed April 21, 1951 [Fuss A; /6 Ma A6 /8 INVENTOR.

IG- h l j oword APrew ATTORNEY Patented Dec. 2, 1952 CLOSURE FRAME Howard A. Prew, Providence, R. I., assignor to Pru-Lesco, Inc., a corporation of Rhode Island Application April 21, 1951, Serial N 0. 222,183

1 Claim.

This invention relates to a box and more particularly to the frame by which the cover is hinged to the body of the box.

Boxes are usually provided with some sort of a hingin means mounted upon the back wall of the body section and the cover section, which hinge is not well adapted to limit the opening movement of the cover from the box and consequently there is likely to be a rupture of the hinge connection to either the cover or the body section of the box.

One of the objects of this invention is to provide a frame which serves to provide a finished edge on the cover section and on the body section, which edges meet in abutting relation and to hingedly relate the parts of this frame so that the cover and body are hinged together.

Another object of this invention is to provide some means to limit the opening movement of the cover from the body so that the cover will stand at substantially right angles to the body in an upright position when the box is open.

Another object of this invention is to provide the frame and hinge means out of a minimum number of pieces of stock.

Another object of this invention is to provide two sections, one which will act as a frame for the body, and the other which will act as a frame for the cover with hinge means as a part of each of these sections so that no assembly operation is necessary outside of providing a pivot pin to hingedly join the sections.

Another object of this invention is to provide in this hinging means which is one piece with the frame sections a finger which will act as a stop to limit the opening movement of the cover from the body of the box without the necessity of adding parts.

Another object of this invention is to provide the sections in identical form and by reversing the sections cause the stop which is provided at one end only of a U section to be on one part of a hinge at one of the hinge joints while it is on the othersection at the other hinge joint.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a perspective view of a box equipped with this invention;

Figure 2 is a sectional view of the frame alone as removed from the remainder of the box;

Figure 3 is a section on line 3-3 of Figure 1;

Figure 4 is a perspective view of the frame looking at the joints of the frame where the invention is particularly centered; and

Figure 5 is a plan view of a blanked-out frame prior to its being bent.

In proceeding with this invention, I cut out from sheet stock a blank which is to become the frame of the box. Two of these blanks are identical, one serving for use on the cover of the box and the other on the body of the box. These frames are then bent into channel shape and the portions of the blank which project beyond one of the channel walls becomes the outer wall when the channel is bent into its general U shape. By reversing two of these sections and providing a finger at the end of one leg, which is absent from the end of the other leg, I enable the fingers to act at each of the joints so as to provide a good stop to limit hinging movement as the frame sections or the cover and body of the box are relatively swung from closed to open position.

With reference to the drawings, l0 designates a blank as shown in Figure 5 which has the stock at one end projecting as at H to provide a hinge ear having an opening [2. A similar projection l3 extends from the other end of the blank and forms a similar hinge ear with an opening [4 therein. A finger l5 projects from this ear l3 to act as a stop, as will presently appear.

The blank shown at I0 is bent into substantially channel shape, as may be seen in Figures 2 and 4, so that the shorter portion l6 becomes the inner wall l1, while the longer port-ion of the blank [8 becomes the outer wall l9 (see Fig. 2) of the channel with a bridging portion 20 between these two walls. In some cases the inner wall I! may be of a width a little greater than the Width of the outer Wall.

The inner wall and bridging portion 20 are out and then bent to provide right-angular corners 2| and 22 and form each of the frames into substantially a U shape with legs 23 and 24 as shown in Figure 4.

In this shape the ears II and I3 protrude beyond the ends of the inner wall I! of each of the legs. By reversing these U-shaped sections, an ear I I will overlap the outer surface of an ear [3 of the other section, as shown in Figure 4, and in this relation a pivot pin such as a hollow rivet 25 is positioned through these ears so as to hingedly relate them. This relationship also brings the fingers [5 in such a position that they slide along the inner surface of an outer wall I9 or along the inner surface of the ear ll so that the fingers I5 will engage the bridging portion 20 of the channel as swinging movement occurs. The location of the finger I5 is such that the frame members may be swung from a position in substantial face-toface contact of the bridging portion through substantially 90 degrees at which position these fingers will form a stop and prevent further movement.

Each of the channel sections may be slipped over the edge of a box, a shown in Figures 1 and 3, where the channel section forms the upper edge of the front wall 25 of the body and front wall 21 of the cover and also embraces the edges of the end walls 28 of the body and 29 of the cover. The body may be designated generally 30 and the cover generally 3!, these being hinged together by the hollow rivets 25 and hinging rela-- tion of the frame sections just discussed.

In the box here shown the box has a plush cover designated in the body as 32 which embraces the front and back walls as well as the end walls, while this plush cover in the cover section 3| is designated 33 and extends about the cardboard front 34 across the top of thecover and it filler and then into the body of the box as at 35 while the liner 36 which is beneath the pad 31 along with this plush cover 35 is held by an insert 38 also covered as at 39 by the insert ortray being forced into the body of the box betweenthe front and'back walls thereof. Thus, the hinge relation of the cover and body sections is supplemented by the fabric covering of the-box which so supplemerits the hinge that where the box is of long extent, such as shown in Figure 1, the cover and body do not separate between the hinge connections formed by the rivets 25.

I claim:

A closure frame comprising two identical sections each in substantially the shape of a U and of channel shaped cross section with spaced inner and outer Walls connected by a bridge portion to receive the edges of the parts to be closed, the outer wall of the channel at the end of both U legs being pivotally connected to a similar wall of the channel of the other U section to hingedly relate the sections, said pivotal connection comprising overlapping inner and outer face contacting portions, one of the inner overlapping hinge portions having an integral finger extending radially of the axis of the pivotal connection and contacting the bridge portion between the channel walls of the other section when the sections are at an angle to each other to limit the relative movement of the sections about said hinge.

HOWARD A. PREW.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2345575 Bates June 30, 1936 2,067,559 Bloom Jan. 12, 1937 2,258,498 Laubins tein Oct; 7, 1941 2,429,962 Reilly Oct. 28, 1947 

